Casing ring



B. F. CONAGHAN CASING RING Filed Dec. 15. 1923 WITNESSES 1 INVENTOR 77% M 1375. Cowcvghflflb v mfi ATTORNEYS I without injuring the operator.

BILLY FRANK GONAG, 0F TONKAWA, OKLAHOMA, ASSIGNOB OF ONE-FQUBTH TO HOW M. GILLESPIE AND ONE-HALF TO WILLIAM J. BEAVEN;

cnsmqynme.

' Application filed December 15, 1923. Serial No. 680,862.

resident of Tonkawa, in the county of, Kay and State of Oklahoma, have invented certain new and useful Improvements in Casing Rings, of which the following is a speci; fication.

This invention relates to casing rings especially adapted for use in oil Well operations:

An important object of this invention is to provide a sectional casing ring or elevator which may be conveniently attached to or removed from a casing,- a tubing or the like,

A iurther object is to provide a casing ring or elevator which may be conveniently adjusted for connection with casings of different diameters.

A further object is to provide a casing ring which is of highly simplified construction,durable in use and cheap'to manview on the line 2- ufacture.

, Other objects and advantages will be apparent during the course of the following description.

In the accompanying drawing, forming a part of this application, and in which like numerals are employed to designate like parts throughout the same, 4

Figure 1 is a erspective of the imprpved casing ring or e evator, I

Figure 2 is a detail transverse sectional of Figure 1, Figure 3 is a group perspective of the unproved elevator,

Figure 4 's a erspectiveofi a bushing embodied in the mvention and means of which a casing of a reduced diameter may be supported,

Figure 5 1s a perspective of one of the sections of the bushing. i

In the drawing, wherein for the purpose of illustration is shown a, preferred embod ment of the invention, the numerals 5 desig nate coacting substantially similar sections, the opposite side of which are formed with semi-circular recesses to receive a well easing, a tubing or the like. The semi-circular recesses out-the spider or the ring in Figure 1 are tapering: i. e., larger at the top than bottom. The slips 3 shown in Figure 1 are fitted in the recesses which equalize the dia eter of the sa d e ess and the grooves therein together with the wedge efi'ect ob.- tained bytapering walls gives a firm grip on the casing or tubing: I

The ends ofthe sections 5 are providedwith extensions 6 having grooves 8 which define ribs 9 and igure 2 illustrates that longitudinal ribs "9 are adapted to be snugly received in the grooves 8 of opposite sections so that when asse'mbled the parts will occupy the position 11- lustrated in Figure 1.

However, attention is directed to the fact that each llb 9 is substantially less in thickness than the thickness of t e major part of the section 5, and con equently the grooves 8, may be made more or less shal- 1 low and do not, in

The extension 6 and the ribs 9 thereon are formed with transverse alined openings 12 casing. When the sections of the device are assembled as in Figure 1, the accidental sep aration of the sections is absolutely pre- 5 vented and furthermore the interlocking connections between the extensions 6 and the ribs 9 positively prevent more strain taking place on one section than on another, or all the strain from the casing being borne by one section alone. If itis desired to reduce the internal diameter of the casing ring a liner or bushing 30 may be employed and as illustrated in Figures 4 and 5, the liner or bushing may consist of a pair of semi-circular sections 31, the upper ends of which are provided with a laterally projecting flange 32 which overlies the upper side of the ring and holds the v liner or bushing in place. The walls of the 1 the casing is released on the ring.

The slips 3 illustrated in Figure 1 fit on the inside of the liner and] are so moulded as to make the recess where the pipe is re-" ceived the same diameter at the top and bot.- tom i. e., the walls of the slips are thicker at the top than at the bottom. The slips are formed with transverse teeth as shown in Figure 1 in order to make a firmer grip on the pipe or tubing. The slips are used with or without the liner. 1

In carrying out the invention, the sections 10 and at longitudinal rib, each rib forming tensions and the ribs of the some to securely one side wall of the adjacent froove end being adopted to be snugly received in the grooye of the opposite section to interlock the sections, bolts passing through said exconnect the sections, at bushing received between said sections and consisting of at pnir of semi-circular members having at flange engaging the upper side of said sections.

r BILLY FRANK C I)Nltirlllfllil 

